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Finding the Fourth Proportional to 67,071, 92,557.98 and 38,778.51

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Solution

The fourth proportional to 67,071, 92,557.98 and 38,778.51 is: 53,514.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,071 : 92,557.98 = 38,778.51 : x
  2. Step 2: Convert to fraction form
    67,071/92,557.98 = 38,778.51/x
  3. Step 3: Cross multiply
    67,071x = 92,557.98 × 38,778.51
  4. Step 4: Simplify right side
    67,071x = 3,589,260,553.01
  5. Step 5: Solve for x
    x = 3,589,260,553.01/67,071
  6. Step 6: Final answer
    x = 53,514.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.